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| Media: | Water |
| Temperature: | Ordinary Temperature |
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Product Overview
Discover the H71 Wafer Check Valve, a marvel in compact design, offering a wafer connection with a structural length reduced to merely 1/4 to 1/8 of traditional flange check valves. This innovative valve, weighing just 1/4 to 1/20 of its conventional counterparts, brings about a remarkable reduction in size and weight. Its rapid closure mechanism effectively mitigates water hammer effects, ensuring smooth operations. Experience minimal fluid resistance and seamless adaptability in both horizontal and vertical pipelines. Compared to the traditional H41 flange check valves, the H71 shines by overcoming the challenges of bulkiness and the installation and maintenance hurdles that come with conventional designs.
Structural Features
- Fast Closure: The spring-loaded disc ensures a quick, short-stroke closure, dramatically reducing water hammer pressures in high-flow conditions.
- Sealing Performance: Featuring a single-disc vertical movement with spring-assisted sealing, this valve guarantees zero leakage and promises an extended service life.
- Material Versatility: Offering components crafted from carbon steel, stainless steel (304/316/316L), duplex steel, and more, this valve meets diverse media requirements seamlessly.
Application Range
- Media Compatibility: Perfectly suited for water, steam, oil, nitric acid, acetic acid, strongly oxidative media, and urea. Thanks to versatile material selection, it extends compatibility to the most corrosive environments.
- Operating Parameters:
- Pressure Rating: Ranges from PN10 to PN420 (equivalent to Class150-Class2500), catering to various pressure demands.
- Size Range: Spanning a broad spectrum from DN15 to DN600, accommodating diverse application needs.
- Temperature Range: Boasting a wide range from -196°C to 540°C, ensuring functionality across a broad range of environments.
- Industry Applications: A favorite in petrochemical, power generation, metallurgy, food processing, environmental protection, and municipal pipeline systems, this valve is indispensable across sectors.
Technical Standards
- Design & Manufacturing: Adheres to stringent standards such as JB/T 8937 and API 594, ensuring high-quality production.
- Flange Connections: Fully supports internationally recognized standards like GB/T 9113 and ASME B16.5.
- Testing & Certification: Complies with API 598 and GB/T 13927 test protocols. Select manufacturers uphold ISO 9001, API 6D, and other esteemed quality certifications.
Installation & Maintenance
- Flow Direction: Ensure alignment of medium flow with body arrow markings; designed for compatibility with both horizontal and vertical mounting.
- Support Requirements: Large-scale valves necessitate independent supports to avert pipeline stress, thus preserving sealing integrity.
Performance Parameters
- Flow Resistance Coefficient: Decreases as diameter increases, e.g., DN50: 2.6; DN1200: 0.7, showcasing efficient flow dynamics.
- Flow Capacity: The DN100 valve boasts a Kv=289 m³/h (Cv=338 per US standards), illustrating its superior high throughput efficiency.
Material Configuration
- Standard Options:
- Body: Available in WCB, 304/316 stainless steel, offering robust durability.
- Disc & Spring: Crafted from stainless steel/alloy steel, ensuring long-term reliability.
- Sealing Surface: Options include rubber or a hard-faced alloy overlay, catering to various sealing needs.
The H71 Wafer Check Valve is engineered to deliver unmatched efficiency, reliability, and versatility for industrial pipeline systems. For optimal performance, finalize selection based on specific media properties, pressure/temperature conditions, and installation environment. Always consult manufacturer datasheets or technical services for tailored project specifications.
| Pressure Rating | PN10~PN40 (or Class 150~300) |
| Nominal Diameter | DN50~DN600 (2"~24") |
| Temperature Range: | Stainless Steel: -29ºC~200ºC (rubber seal) / 425ºC (metal seal) |
| Carbon Steel: -29ºC~425ºC | |
| Connection Standards | GB, ANSI, DIN, JIS wafer flange dimensions. |
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